Steve Loughran created HADOOP-14851:
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             Summary: LambdaTestUtils.eventually() doesn't spin on Assertion 
failures
                 Key: HADOOP-14851
                 URL: https://issues.apache.org/jira/browse/HADOOP-14851
             Project: Hadoop Common
          Issue Type: Bug
          Components: test
    Affects Versions: 2.8.1
            Reporter: Steve Loughran
            Assignee: Steve Loughran


This is funny. The {{LsmbdaTestUtils.eventually()}} method, meant to spin until 
a closure stops raising exceptions, doesn't catch {{Error}} and subclasses, so 
doesn't fail on an {{Assert.assert()}} failure, which raises an 
{{AssertionError}}. My bad :)

Example:
{code}
    eventually(TIMEOUT,
        () -> {
          while (counter.incrementAndGet()  < 5) {
            assert false : "oops";
          }
        },
        retryLogic);
{code}

Fix: catch Throwable, rethrow. Needs to add VirtualMachineError & subclasses to 
the set of errors not to spin on (OOM, stack overflow, ...)



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